The M4 4-Volt Lithium-Ion Cordless Screwdriver Kit incorporates the latest Milwaukee core technologies in motor, REDLINK Intelligence electronics and REDLITHIUM 2.0 batteries, increasing power and run time while shrinking its size. It features a 21-position clutch with auto shut-off that stops rotation of the bit once the desired torque setting is met. The quick-change chuck allows for 1-handed bit changes and a snug bit grip prevents dropped screws when the screwdriver is inverted. The SHOCKWAVE Impact-Duty Alloy Steel Drill and Screw Driver Bit Set with Right Angle Adapter includes a compact magnetic bit holder, right angle adapter, twenty-three 1 in. insert bits: 2 PH1, 5 PH2, 2 PH3, 2 SQ1, 4 SQ2, 2)SQ3, 3 T20, 3 T25, five 2 power bits: two PH2, SQ2, T20, T25. It is designed for use with impact drivers and drill drivers and has a customizable accessory case that's designed for use in PACKOUT.